Global Patent Index - EP 3402014 A1

EP 3402014 A1 20181114 - COMPACT PLASMA ULTRAINTENSE LASER

Title (en)

COMPACT PLASMA ULTRAINTENSE LASER

Title (de)

KOMPAKTER ULTRAINTENSIVER PLASMALASER

Title (fr)

LASER ULTRAINTENSE DE PLASMA COMPACT

Publication

EP 3402014 A1 20181114 (EN)

Application

EP 18171849 A 20180511

Priority

  • US 201762504772 P 20170511
  • US 201815893949 A 20180212

Abstract (en)

There is provided a method for producing ultraintense laser pulses in which Stimulated Raman Back-Scattering (SRBS) amplifies and compresses a seed pulse (185), as well as an inventive compact plasma device which may implement the method. SRBS may be achieved by counter-propagating the seed pulse (185) and a pump pulse (190) through a few millimeter-long plasma (195) having a plasma frequency equal to the difference between the pump and the seed pulse frequencies. Dichroic mirrors (305,306) may be arranged to provide two amplifying and compression passes through the plasma, allowing greater seed pulse amplification by mitigating Landau damping within the plasma that would occur in a single pass of a plasma of double the length. Alternate examples provide for 2n number of amplification and compression passes by providing n short plasma columns, where n‰¥2, and additional, appropriately arranged dichroic mirrors. The compact size of the device, and the ultraintense, ultrashort pulses it emits, suit the device to dermatological applications.

IPC 8 full level

H01S 3/00 (2006.01); H01S 3/30 (2006.01); A61B 18/20 (2006.01); G02F 1/35 (2006.01); H01S 3/16 (2006.01); H01S 3/23 (2006.01)

CPC (source: EP US)

A61B 18/203 (2013.01 - EP US); A61F 9/00825 (2013.01 - EP US); H01S 3/0057 (2013.01 - EP US); H01S 3/094076 (2013.01 - US); H01S 3/10092 (2013.01 - US); H01S 3/1024 (2013.01 - US); H01S 3/108 (2013.01 - US); H01S 3/1086 (2013.01 - US); H01S 3/30 (2013.01 - US); H01S 3/302 (2013.01 - US); H01S 3/305 (2013.01 - EP US); A61B 2018/00583 (2013.01 - EP US); A61F 9/008 (2013.01 - EP US); A61F 2009/0087 (2013.01 - EP US); H01S 3/005 (2013.01 - EP US); H01S 3/0071 (2013.01 - EP US); H01S 3/1611 (2013.01 - EP US); H01S 3/1625 (2013.01 - EP US); H01S 3/1636 (2013.01 - EP US); H01S 3/1643 (2013.01 - EP US); H01S 3/2333 (2013.01 - EP US); H01S 3/2391 (2013.01 - EP US)

Citation (applicant)

Citation (search report)

  • [Y] US 6208458 B1 20010327 - GALVANAUSKAS ALMANTAS [US], et al
  • [XYI] W. CHENG ET AL: "Reaching the Nonlinear Regime of Raman Amplification of Ultrashort Laser Pulses", PHYSICAL REVIEW LETTERS, vol. 94, no. 4, 1 February 2005 (2005-02-01), US, XP055507441, ISSN: 0031-9007, DOI: 10.1103/PhysRevLett.94.045003
  • [XYI] J. REN ET AL: "A compact double-pass Raman backscattering amplifier/compressor", PHYSICS OF PLASMAS., vol. 15, no. 5, 1 May 2008 (2008-05-01), US, pages 056702, XP055507396, ISSN: 1070-664X, DOI: 10.1063/1.2844352
  • [XYI] YANG X ET AL: "Experimental investigation of chirp pulse Raman amplification in plasma", HARNESSING RELATIVISTIC PLASMA WAVES AS NOVEL RADIATION SOURCES FROM TERAHERTZ TO X-RAYS AND BEYOND II, SPIE, 1000 20TH ST. BELLINGHAM WA 98225-6705 USA, vol. 8075, no. 1, 5 May 2011 (2011-05-05), pages 1 - 6, XP060012594, DOI: 10.1117/12.887195

Designated contracting state (EPC)

AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR

Designated extension state (EPC)

BA ME

DOCDB simple family (publication)

EP 3402014 A1 20181114; US 10431952 B2 20191001; US 2018331489 A1 20181115

DOCDB simple family (application)

EP 18171849 A 20180511; US 201815893949 A 20180212